Flash Flood Warning 33, NWS Las Vegas, NV

237 
WGUS75 KVEF 270012
FFSVEF

Flash Flood Statement
National Weather Service Las Vegas NV
512 PM PDT Tue Jul 26 2022

CAC071-270130-
/O.CON.KVEF.FF.W.0033.000000T0000Z-220727T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
San Bernardino CA-
512 PM PDT Tue Jul 26 2022

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM PDT THIS 
EVENING FOR SAN BERNARDINO COUNTY...

At 512 PM PDT, Doppler radar indicates that heavy rain has ended in 
the warned area however the heavy rain from earlier thunderstorms 
will continue to create local flooding concerns.

HAZARD...Flash flooding.

SOURCE...Radar.

IMPACT...Flooding of low-water crossings, creeks, normally dry
         washes and roads.

Some locations impacted include...
  Needles, Highway 95, and I-40.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

&&

LAT...LON 3507 11473 3500 11464 3496 11464 3492 11464
      3489 11464 3488 11464 3487 11464 3480 11459
      3480 11480

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

JS

670 
WGUS75 KVEF 270125
FFSVEF

Flash Flood Statement
National Weather Service Las Vegas NV
625 PM PDT Tue Jul 26 2022

CAC071-270135-
/O.EXP.KVEF.FF.W.0033.000000T0000Z-220727T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
San Bernardino CA-
625 PM PDT Tue Jul 26 2022

...FLASH FLOOD WARNING WILL EXPIRE AT 630 PM PDT THIS EVENING FOR 
SAN BERNARDINO COUNTY...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

A Flood Watch remains in effect until 500 AM PDT Wednesday for 
portions of southeast California and southern Nevada.

LAT...LON 3507 11473 3500 11464 3496 11464 3492 11464
      3489 11464 3488 11464 3487 11464 3480 11459
      3480 11480

$$

JS

Area Forecast Discussion
National Weather Service Las Vegas NV
115 PM PDT Tue Jul 26 2022

.SYNOPSIS...Monsoon moisture remains across the Desert Southwest
through the week, fueling chances for showers and thunderstorms each
day, particularly favoring the higher terrain. Heavy rain and flash
flooding will be the biggest concerns. The high humidity will help
hold temperatures down, especially in areas where rain occurs.
&&

.SHORT TERM...through tonight. Thunderstorms have had a little
difficulty getting started today due to the overturning and
stabilization that occurred yesterday, plus cooler temperatures this
morning, but coverage was slowly increasing as of shortly after
noon. Light and variable winds through the troposphere and record
precipitable water values were leading to very slow storm motions
and locally heavy rain again. Some high resolution models are again
bullish on storms organizing over far southwest Utah/southeast
Nevada and tracking south or southwest this evening/tonight. If this
comes to pass, perhaps the Dodge Springs Fire could receive heavy
rain like the Pine Peak Fire did yesterday.

.LONG TERM...Wednesday through Sunday.

Monsoonal moisture will remain entrenched across the Mojave Desert
and southern Great Basin region through the week and into the
weekend, with daily chances for storm activity expected. As high
pressure migrates northwest into the Great Basin, a more
northeasterly flow pattern will set up for the second half of the
week which would tend to encourage thunderstorm development in
Southern UT/Northern AZ to develop into the warm and moist lower
deserts each day, a pattern often accompanied by gusty thunderstorm
winds. Additionally, with the moist airmass lingering, afternoon
temperatures will tend to hover a little shy of daily normals. The
details of which days are more active than others will depend on
cloud cover and forcing details (shortwaves/MCVs/outflows/etc)
that are difficult to resolve at this juncture, but thunderstorm
activity will be hanging around for a while.

Looking even further out, the official CPC 6-10 and 8-14 day
outlooks favor a continuation of above normal precipitation
probabilities, so it would seem the monsoon has finally kicked
into high gear across our neck of the woods.
&&

.AVIATION...For Harry Reid...Light south-southeast winds expected
until thunderstorm activity begins to influence the valley.
Thunderstorm activity at and around the terminal will result in
gusty, erratic winds, with over 35 kt gusts and cloud-to-ground
lightning possible with the strongest storms. Best chances for
storms will be generally between 19z and 02z. SCT-BKN around 15kft
throughout the TAF period, with CIGs down to 8kft possible with
overhead storms. Winds tonight should be light out of the south-
southwest.

For the rest of southern Nevada, northwest Arizona and southeast
California...Winds will favor a southerly direction for most of the
area today, with speeds around 10 knots. Afternoon thunderstorms
will be possible in the vicinity of all TAF sites, though the best
chances will be in the Las Vegas Valley and Owens Valley. Lightning,
heavy rain, and erratic wind gusts up to 35 knots will be possible
with any nearby storms. Thunderstorm activity should wane after
sunset. SCT-BKN clouds around 15kft through the TAF period, though
CIGs may drop to 8kft with overhead storms.
&&

.SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report
any significant weather or impacts according to standard operating
procedures.
&&

SHORT TERM...Morgan
LONG TERM...Outler
AVIATION...Woods

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